Pistons & Rings

The identification mark on face of upper and intermediate piston rings must point toward top of piston.

CAUTION

Install piston rings in the following order:

Oil ring expander

Upper oil ring side rail

Lower oil ring side rail

No. 2 Intermediate piston ring

No. 1 Upper piston ring

Install oil ring expander.

Install upper side rail first and then the lower side rail. Install the side rails (1) by placing one end between the piston ring groove and the oil ring expander. Hold end firmly and press down the portion to be installed until side rail is in position. Do not use a piston ring expander.

NOTE

The compression rings are marked Y1 for the upper compression ring and Y2 for the second compression ring. These markings must face upward.

Fig. Install the side rail (1) by placing one end between the piston ring groove and the oil ring expand

Install No. 2 piston ring and then No. 1 piston ring.

Position piston ring end gaps.

Fig. Position piston ring end gaps

Position oil ring expander gap at least 45° from the side rail gaps but not on the piston pin center or on the thrust direction. Staggering ring gap is important for oil control.

2.7L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

Measure clearance of piston rings to the cylinder bore and piston.

CAUTION

Install piston rings in the following order:

Oil ring expander.

Upper oil ring side rail.

Lower oil ring side rail.

No. 2 Intermediate piston ring.

No. 1 Upper piston ring.

Install oil ring expander.

NOTE

Install the side rail (1) by placing one end between the piston ring groove and the oil ring expander. Hold end firmly and press down the portion to be installed until side rail is in position. Do not use a piston ring expander during this step.

Fig. Install the side rail (1) by placing one end between the piston ring groove and the oil ring expand

Install upper side rail first and then the lower side rail.

NOTE

The No. 1 and No. 2 piston rings have a different cross section. Ensure No. 2 ring is installed with manufacturers I.D. mark (dot) facing up, towards top of the piston.

Fig. Install upper side rail first and then the lower side rail

Install No. 2 piston ring and then No. 1 piston ring.

Fig. Install No. 2 piston ring and then No. 1 piston ring

Position piston ring end gaps.

Fig. Position piston ring end gaps

Position oil ring expander gap at least 45° from the side rail gaps but not on the piston pin center or on the thrust direction. Staggering ring gap is important for oil control.

3.5L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

Measure clearance of piston rings to the cylinder bore and piston.

The No. 1 and No. 2 piston rings have a different cross section. Ensure that whichever design No. 2 ring is installed, it is installed with manufacturers I.D. mark (dot) facing up, towards top of the piston.

Fig. The No. 1 and No. 2 piston rings have a different cross section

CAUTION

Install piston rings in the following order: Do not use a piston ring expander during this step.

Oil ring expander.

Lower oil ring side rail.

Upper oil ring side rail.

No. 2 Intermediate piston ring.

No. 1 Upper piston ring.

Install the side rail (1) by placing one end between the piston ring groove and the expander. Hold end firmly and press down the portion to be installed until side rail is in position.

Fig. Install upper side rail first and then the lower side rail

Install upper side rail first and then the lower side rail.

Install the No. 2 piston ring and then No. 1 piston ring.

Fig. Install No. 2 piston ring and then No. 1 piston ring

Position piston ring end gaps.

Fig. Position piston ring end gaps

Position oil ring expander gap at least 45° from the side rail gaps but not on the piston pin center or on the thrust direction. Staggering ring gap is important for oil control.